Answered: Two identical 9.60-g metal spheres…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 74P: In the simple Bohr model of the ground state of the hydrogen atom, the electron travels in a...

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Two identical 9.60-g metal spheres (small enough to be treated
as particles) are hung from separate 300-mm strings attached
to the same nail in a ceiling. Surplus electrons are added to each
sphere, and then the spheres are brought in contact with
each other and released. Their equilibrium position is such
that each string makes a 13.0 angle with the vertical. How
many surplus electrons are on each sphere?

Expert Solution

Step 1

Given:

The mass of the spheres: $m = 9.6 g = 9.6 \times 10^{- 3} k g$

Length of the strings: $l = 300 m m = 0.3 m$

Angle made by each string with the vertical at equilibrium: $θ = 13 °$

We need to find the number of surplus electrons on each of the spheres.

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